Re: best deep cycle????
The "best" is what does, what you need it to do, the type of charging system you use ect. Good lead acid batteries are fine if you can access them easily for watering. Gel cells are really pricey $250 for 100AH, but they charge faster and don't need watering and don't gas. They do need a smart charger with a charging cycle for that type of battery otherwise you cook the batteries. If you can access the batteries easily for maintenence and don't have any important connections going through the battery compartment, then a good lead acid battery is the way to go. AH/$.